drivers/hwmon/w83792d.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * w83792d.c - Part of lm_sensors, Linux kernel modules for hardware
   4  *             monitoring
   5  * Copyright (C) 2004, 2005 Winbond Electronics Corp.
   6  *                          Shane Huang,
   7  *                          Rudolf Marek <r.marek@assembler.cz>
   8  *
   9  * Note:
  10  * 1. This driver is only for 2.6 kernel, 2.4 kernel need a different driver.
  11  * 2. This driver is only for Winbond W83792D C version device, there
  12  *     are also some motherboards with B version W83792D device. The
  13  *     calculation method to in6-in7(measured value, limits) is a little
  14  *     different between C and B version. C or B version can be identified
  15  *     by CR[0x49h].
  16  */
  17
  18 /*
  19  * Supports following chips:
  20  *
  21  * Chip         #vin    #fanin  #pwm    #temp   wchipid vendid  i2c     ISA
  22  * w83792d      9       7       7       3       0x7a    0x5ca3  yes     no
  23  */
  24
  25 #include <linux/module.h>
  26 #include <linux/init.h>
  27 #include <linux/slab.h>
  28 #include <linux/i2c.h>
  29 #include <linux/hwmon.h>
  30 #include <linux/hwmon-sysfs.h>
  31 #include <linux/err.h>
  32 #include <linux/mutex.h>
  33 #include <linux/sysfs.h>
  34 #include <linux/jiffies.h>
  35
  36 /* Addresses to scan */
  37 static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, 0x2f,
  38                                                 I2C_CLIENT_END };
  39
  40 /* Insmod parameters */
  41
  42 static unsigned short force_subclients[4];
  43 module_param_array(force_subclients, short, NULL, 0);
  44 MODULE_PARM_DESC(force_subclients,
  45                  "List of subclient addresses: {bus, clientaddr, subclientaddr1, subclientaddr2}");
  46
  47 static bool init;
  48 module_param(init, bool, 0);
  49 MODULE_PARM_DESC(init, "Set to one to force chip initialization");
  50
  51 /* The W83792D registers */
  52 static const u8 W83792D_REG_IN[9] = {
  53         0x20,   /* Vcore A in DataSheet */
  54         0x21,   /* Vcore B in DataSheet */
  55         0x22,   /* VIN0 in DataSheet */
  56         0x23,   /* VIN1 in DataSheet */
  57         0x24,   /* VIN2 in DataSheet */
  58         0x25,   /* VIN3 in DataSheet */
  59         0x26,   /* 5VCC in DataSheet */
  60         0xB0,   /* 5VSB in DataSheet */
  61         0xB1    /* VBAT in DataSheet */
  62 };
  63 #define W83792D_REG_LOW_BITS1 0x3E  /* Low Bits I in DataSheet */
  64 #define W83792D_REG_LOW_BITS2 0x3F  /* Low Bits II in DataSheet */
  65 static const u8 W83792D_REG_IN_MAX[9] = {
  66         0x2B,   /* Vcore A High Limit in DataSheet */
  67         0x2D,   /* Vcore B High Limit in DataSheet */
  68         0x2F,   /* VIN0 High Limit in DataSheet */
  69         0x31,   /* VIN1 High Limit in DataSheet */
  70         0x33,   /* VIN2 High Limit in DataSheet */
  71         0x35,   /* VIN3 High Limit in DataSheet */
  72         0x37,   /* 5VCC High Limit in DataSheet */
  73         0xB4,   /* 5VSB High Limit in DataSheet */
  74         0xB6    /* VBAT High Limit in DataSheet */
  75 };
  76 static const u8 W83792D_REG_IN_MIN[9] = {
  77         0x2C,   /* Vcore A Low Limit in DataSheet */
  78         0x2E,   /* Vcore B Low Limit in DataSheet */
  79         0x30,   /* VIN0 Low Limit in DataSheet */
  80         0x32,   /* VIN1 Low Limit in DataSheet */
  81         0x34,   /* VIN2 Low Limit in DataSheet */
  82         0x36,   /* VIN3 Low Limit in DataSheet */
  83         0x38,   /* 5VCC Low Limit in DataSheet */
  84         0xB5,   /* 5VSB Low Limit in DataSheet */
  85         0xB7    /* VBAT Low Limit in DataSheet */
  86 };
  87 static const u8 W83792D_REG_FAN[7] = {
  88         0x28,   /* FAN 1 Count in DataSheet */
  89         0x29,   /* FAN 2 Count in DataSheet */
  90         0x2A,   /* FAN 3 Count in DataSheet */
  91         0xB8,   /* FAN 4 Count in DataSheet */
  92         0xB9,   /* FAN 5 Count in DataSheet */
  93         0xBA,   /* FAN 6 Count in DataSheet */
  94         0xBE    /* FAN 7 Count in DataSheet */
  95 };
  96 static const u8 W83792D_REG_FAN_MIN[7] = {
  97         0x3B,   /* FAN 1 Count Low Limit in DataSheet */
  98         0x3C,   /* FAN 2 Count Low Limit in DataSheet */
  99         0x3D,   /* FAN 3 Count Low Limit in DataSheet */
 100         0xBB,   /* FAN 4 Count Low Limit in DataSheet */
 101         0xBC,   /* FAN 5 Count Low Limit in DataSheet */
 102         0xBD,   /* FAN 6 Count Low Limit in DataSheet */
 103         0xBF    /* FAN 7 Count Low Limit in DataSheet */
 104 };
 105 #define W83792D_REG_FAN_CFG 0x84        /* FAN Configuration in DataSheet */
 106 static const u8 W83792D_REG_FAN_DIV[4] = {
 107         0x47,   /* contains FAN2 and FAN1 Divisor */
 108         0x5B,   /* contains FAN4 and FAN3 Divisor */
 109         0x5C,   /* contains FAN6 and FAN5 Divisor */
 110         0x9E    /* contains FAN7 Divisor. */
 111 };
 112 static const u8 W83792D_REG_PWM[7] = {
 113         0x81,   /* FAN 1 Duty Cycle, be used to control */
 114         0x83,   /* FAN 2 Duty Cycle, be used to control */
 115         0x94,   /* FAN 3 Duty Cycle, be used to control */
 116         0xA3,   /* FAN 4 Duty Cycle, be used to control */
 117         0xA4,   /* FAN 5 Duty Cycle, be used to control */
 118         0xA5,   /* FAN 6 Duty Cycle, be used to control */
 119         0xA6    /* FAN 7 Duty Cycle, be used to control */
 120 };
 121 #define W83792D_REG_BANK                0x4E
 122 #define W83792D_REG_TEMP2_CONFIG        0xC2
 123 #define W83792D_REG_TEMP3_CONFIG        0xCA
 124
 125 static const u8 W83792D_REG_TEMP1[3] = {
 126         0x27,   /* TEMP 1 in DataSheet */
 127         0x39,   /* TEMP 1 Over in DataSheet */
 128         0x3A,   /* TEMP 1 Hyst in DataSheet */
 129 };
 130
 131 static const u8 W83792D_REG_TEMP_ADD[2][6] = {
 132         { 0xC0,         /* TEMP 2 in DataSheet */
 133           0xC1,         /* TEMP 2(0.5 deg) in DataSheet */
 134           0xC5,         /* TEMP 2 Over High part in DataSheet */
 135           0xC6,         /* TEMP 2 Over Low part in DataSheet */
 136           0xC3,         /* TEMP 2 Thyst High part in DataSheet */
 137           0xC4 },       /* TEMP 2 Thyst Low part in DataSheet */
 138         { 0xC8,         /* TEMP 3 in DataSheet */
 139           0xC9,         /* TEMP 3(0.5 deg) in DataSheet */
 140           0xCD,         /* TEMP 3 Over High part in DataSheet */
 141           0xCE,         /* TEMP 3 Over Low part in DataSheet */
 142           0xCB,         /* TEMP 3 Thyst High part in DataSheet */
 143           0xCC }        /* TEMP 3 Thyst Low part in DataSheet */
 144 };
 145
 146 static const u8 W83792D_REG_THERMAL[3] = {
 147         0x85,   /* SmartFanI: Fan1 target value */
 148         0x86,   /* SmartFanI: Fan2 target value */
 149         0x96    /* SmartFanI: Fan3 target value */
 150 };
 151
 152 static const u8 W83792D_REG_TOLERANCE[3] = {
 153         0x87,   /* (bit3-0)SmartFan Fan1 tolerance */
 154         0x87,   /* (bit7-4)SmartFan Fan2 tolerance */
 155         0x97    /* (bit3-0)SmartFan Fan3 tolerance */
 156 };
 157
 158 static const u8 W83792D_REG_POINTS[3][4] = {
 159         { 0x85,         /* SmartFanII: Fan1 temp point 1 */
 160           0xE3,         /* SmartFanII: Fan1 temp point 2 */
 161           0xE4,         /* SmartFanII: Fan1 temp point 3 */
 162           0xE5 },       /* SmartFanII: Fan1 temp point 4 */
 163         { 0x86,         /* SmartFanII: Fan2 temp point 1 */
 164           0xE6,         /* SmartFanII: Fan2 temp point 2 */
 165           0xE7,         /* SmartFanII: Fan2 temp point 3 */
 166           0xE8 },       /* SmartFanII: Fan2 temp point 4 */
 167         { 0x96,         /* SmartFanII: Fan3 temp point 1 */
 168           0xE9,         /* SmartFanII: Fan3 temp point 2 */
 169           0xEA,         /* SmartFanII: Fan3 temp point 3 */
 170           0xEB }        /* SmartFanII: Fan3 temp point 4 */
 171 };
 172
 173 static const u8 W83792D_REG_LEVELS[3][4] = {
 174         { 0x88,         /* (bit3-0) SmartFanII: Fan1 Non-Stop */
 175           0x88,         /* (bit7-4) SmartFanII: Fan1 Level 1 */
 176           0xE0,         /* (bit7-4) SmartFanII: Fan1 Level 2 */
 177           0xE0 },       /* (bit3-0) SmartFanII: Fan1 Level 3 */
 178         { 0x89,         /* (bit3-0) SmartFanII: Fan2 Non-Stop */
 179           0x89,         /* (bit7-4) SmartFanII: Fan2 Level 1 */
 180           0xE1,         /* (bit7-4) SmartFanII: Fan2 Level 2 */
 181           0xE1 },       /* (bit3-0) SmartFanII: Fan2 Level 3 */
 182         { 0x98,         /* (bit3-0) SmartFanII: Fan3 Non-Stop */
 183           0x98,         /* (bit7-4) SmartFanII: Fan3 Level 1 */
 184           0xE2,         /* (bit7-4) SmartFanII: Fan3 Level 2 */
 185           0xE2 }        /* (bit3-0) SmartFanII: Fan3 Level 3 */
 186 };
 187
 188 #define W83792D_REG_GPIO_EN             0x1A
 189 #define W83792D_REG_CONFIG              0x40
 190 #define W83792D_REG_VID_FANDIV          0x47
 191 #define W83792D_REG_CHIPID              0x49
 192 #define W83792D_REG_WCHIPID             0x58
 193 #define W83792D_REG_CHIPMAN             0x4F
 194 #define W83792D_REG_PIN                 0x4B
 195 #define W83792D_REG_I2C_SUBADDR         0x4A
 196
 197 #define W83792D_REG_ALARM1 0xA9         /* realtime status register1 */
 198 #define W83792D_REG_ALARM2 0xAA         /* realtime status register2 */
 199 #define W83792D_REG_ALARM3 0xAB         /* realtime status register3 */
 200 #define W83792D_REG_CHASSIS 0x42        /* Bit 5: Case Open status bit */
 201 #define W83792D_REG_CHASSIS_CLR 0x44    /* Bit 7: Case Open CLR_CHS/Reset bit */
 202
 203 /* control in0/in1 's limit modifiability */
 204 #define W83792D_REG_VID_IN_B            0x17
 205
 206 #define W83792D_REG_VBAT                0x5D
 207 #define W83792D_REG_I2C_ADDR            0x48
 208
 209 /*
 210  * Conversions. Rounding and limit checking is only done on the TO_REG
 211  * variants. Note that you should be a bit careful with which arguments
 212  * these macros are called: arguments may be evaluated more than once.
 213  * Fixing this is just not worth it.
 214  */
 215 #define IN_FROM_REG(nr, val) (((nr) <= 1) ? ((val) * 2) : \
 216                 ((((nr) == 6) || ((nr) == 7)) ? ((val) * 6) : ((val) * 4)))
 217 #define IN_TO_REG(nr, val) (((nr) <= 1) ? ((val) / 2) : \
 218                 ((((nr) == 6) || ((nr) == 7)) ? ((val) / 6) : ((val) / 4)))
 219
 220 static inline u8
 221 FAN_TO_REG(long rpm, int div)
 222 {
 223         if (rpm == 0)
 224                 return 255;
 225         rpm = clamp_val(rpm, 1, 1000000);
 226         return clamp_val((1350000 + rpm * div / 2) / (rpm * div), 1, 254);
 227 }
 228
 229 #define FAN_FROM_REG(val, div)  ((val) == 0   ? -1 : \
 230                                 ((val) == 255 ? 0 : \
 231                                                 1350000 / ((val) * (div))))
 232
 233 /* for temp1 */
 234 #define TEMP1_TO_REG(val)       (clamp_val(((val) < 0 ? (val) + 0x100 * 1000 \
 235                                                       : (val)) / 1000, 0, 0xff))
 236 #define TEMP1_FROM_REG(val)     (((val) & 0x80 ? (val)-0x100 : (val)) * 1000)
 237 /* for temp2 and temp3, because they need additional resolution */
 238 #define TEMP_ADD_FROM_REG(val1, val2) \
 239         ((((val1) & 0x80 ? (val1)-0x100 \
 240                 : (val1)) * 1000) + ((val2 & 0x80) ? 500 : 0))
 241 #define TEMP_ADD_TO_REG_HIGH(val) \
 242         (clamp_val(((val) < 0 ? (val) + 0x100 * 1000 : (val)) / 1000, 0, 0xff))
 243 #define TEMP_ADD_TO_REG_LOW(val)        ((val%1000) ? 0x80 : 0x00)
 244
 245 #define DIV_FROM_REG(val)               (1 << (val))
 246
 247 static inline u8
 248 DIV_TO_REG(long val)
 249 {
 250         int i;
 251         val = clamp_val(val, 1, 128) >> 1;
 252         for (i = 0; i < 7; i++) {
 253                 if (val == 0)
 254                         break;
 255                 val >>= 1;
 256         }
 257         return (u8)i;
 258 }
 259
 260 struct w83792d_data {
 261         struct device *hwmon_dev;
 262
 263         struct mutex update_lock;
 264         bool valid;             /* true if following fields are valid */
 265         unsigned long last_updated;     /* In jiffies */
 266
 267         u8 in[9];               /* Register value */
 268         u8 in_max[9];           /* Register value */
 269         u8 in_min[9];           /* Register value */
 270         u16 low_bits;           /* Additional resolution to voltage in6-0 */
 271         u8 fan[7];              /* Register value */
 272         u8 fan_min[7];          /* Register value */
 273         u8 temp1[3];            /* current, over, thyst */
 274         u8 temp_add[2][6];      /* Register value */
 275         u8 fan_div[7];          /* Register encoding, shifted right */
 276         u8 pwm[7];              /* The 7 PWM outputs */
 277         u8 pwmenable[3];
 278         u32 alarms;             /* realtime status register encoding,combined */
 279         u8 chassis;             /* Chassis status */
 280         u8 thermal_cruise[3];   /* Smart FanI: Fan1,2,3 target value */
 281         u8 tolerance[3];        /* Fan1,2,3 tolerance(Smart Fan I/II) */
 282         u8 sf2_points[3][4];    /* Smart FanII: Fan1,2,3 temperature points */
 283         u8 sf2_levels[3][4];    /* Smart FanII: Fan1,2,3 duty cycle levels */
 284 };
 285
 286 static int w83792d_probe(struct i2c_client *client);
 287 static int w83792d_detect(struct i2c_client *client,
 288                           struct i2c_board_info *info);
 289 static int w83792d_remove(struct i2c_client *client);
 290 static struct w83792d_data *w83792d_update_device(struct device *dev);
 291
 292 #ifdef DEBUG
 293 static void w83792d_print_debug(struct w83792d_data *data, struct device *dev);
 294 #endif
 295
 296 static void w83792d_init_client(struct i2c_client *client);
 297
 298 static const struct i2c_device_id w83792d_id[] = {
 299         { "w83792d", 0 },
 300         { }
 301 };
 302 MODULE_DEVICE_TABLE(i2c, w83792d_id);
 303
 304 static struct i2c_driver w83792d_driver = {
 305         .class          = I2C_CLASS_HWMON,
 306         .driver = {
 307                 .name = "w83792d",
 308         },
 309         .probe_new      = w83792d_probe,
 310         .remove         = w83792d_remove,
 311         .id_table       = w83792d_id,
 312         .detect         = w83792d_detect,
 313         .address_list   = normal_i2c,
 314 };
 315
 316 static inline long in_count_from_reg(int nr, struct w83792d_data *data)
 317 {
 318         /* in7 and in8 do not have low bits, but the formula still works */
 319         return (data->in[nr] << 2) | ((data->low_bits >> (2 * nr)) & 0x03);
 320 }
 321
 322 /*
 323  * The SMBus locks itself. The Winbond W83792D chip has a bank register,
 324  * but the driver only accesses registers in bank 0, so we don't have
 325  * to switch banks and lock access between switches.
 326  */
 327 static inline int w83792d_read_value(struct i2c_client *client, u8 reg)
 328 {
 329         return i2c_smbus_read_byte_data(client, reg);
 330 }
 331
 332 static inline int
 333 w83792d_write_value(struct i2c_client *client, u8 reg, u8 value)
 334 {
 335         return i2c_smbus_write_byte_data(client, reg, value);
 336 }
 337
 338 /* following are the sysfs callback functions */
 339 static ssize_t show_in(struct device *dev, struct device_attribute *attr,
 340                         char *buf)
 341 {
 342         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 343         int nr = sensor_attr->index;
 344         struct w83792d_data *data = w83792d_update_device(dev);
 345         return sprintf(buf, "%ld\n",
 346                        IN_FROM_REG(nr, in_count_from_reg(nr, data)));
 347 }
 348
 349 #define show_in_reg(reg) \
 350 static ssize_t show_##reg(struct device *dev, struct device_attribute *attr, \
 351                         char *buf) \
 352 { \
 353         struct sensor_device_attribute *sensor_attr \
 354                 = to_sensor_dev_attr(attr); \
 355         int nr = sensor_attr->index; \
 356         struct w83792d_data *data = w83792d_update_device(dev); \
 357         return sprintf(buf, "%ld\n", \
 358                        (long)(IN_FROM_REG(nr, data->reg[nr]) * 4)); \
 359 }
 360
 361 show_in_reg(in_min);
 362 show_in_reg(in_max);
 363
 364 #define store_in_reg(REG, reg) \
 365 static ssize_t store_in_##reg(struct device *dev, \
 366                                 struct device_attribute *attr, \
 367                                 const char *buf, size_t count) \
 368 { \
 369         struct sensor_device_attribute *sensor_attr \
 370                         = to_sensor_dev_attr(attr); \
 371         int nr = sensor_attr->index; \
 372         struct i2c_client *client = to_i2c_client(dev); \
 373         struct w83792d_data *data = i2c_get_clientdata(client); \
 374         unsigned long val; \
 375         int err = kstrtoul(buf, 10, &val); \
 376         if (err) \
 377                 return err; \
 378         mutex_lock(&data->update_lock); \
 379         data->in_##reg[nr] = clamp_val(IN_TO_REG(nr, val) / 4, 0, 255); \
 380         w83792d_write_value(client, W83792D_REG_IN_##REG[nr], \
 381                             data->in_##reg[nr]); \
 382         mutex_unlock(&data->update_lock); \
 383          \
 384         return count; \
 385 }
 386 store_in_reg(MIN, min);
 387 store_in_reg(MAX, max);
 388
 389 #define show_fan_reg(reg) \
 390 static ssize_t show_##reg(struct device *dev, struct device_attribute *attr, \
 391                         char *buf) \
 392 { \
 393         struct sensor_device_attribute *sensor_attr \
 394                         = to_sensor_dev_attr(attr); \
 395         int nr = sensor_attr->index - 1; \
 396         struct w83792d_data *data = w83792d_update_device(dev); \
 397         return sprintf(buf, "%d\n", \
 398                 FAN_FROM_REG(data->reg[nr], DIV_FROM_REG(data->fan_div[nr]))); \
 399 }
 400
 401 show_fan_reg(fan);
 402 show_fan_reg(fan_min);
 403
 404 static ssize_t
 405 store_fan_min(struct device *dev, struct device_attribute *attr,
 406                 const char *buf, size_t count)
 407 {
 408         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 409         int nr = sensor_attr->index - 1;
 410         struct i2c_client *client = to_i2c_client(dev);
 411         struct w83792d_data *data = i2c_get_clientdata(client);
 412         unsigned long val;
 413         int err;
 414
 415         err = kstrtoul(buf, 10, &val);
 416         if (err)
 417                 return err;
 418
 419         mutex_lock(&data->update_lock);
 420         data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr]));
 421         w83792d_write_value(client, W83792D_REG_FAN_MIN[nr],
 422                                 data->fan_min[nr]);
 423         mutex_unlock(&data->update_lock);
 424
 425         return count;
 426 }
 427
 428 static ssize_t
 429 show_fan_div(struct device *dev, struct device_attribute *attr,
 430                 char *buf)
 431 {
 432         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 433         int nr = sensor_attr->index;
 434         struct w83792d_data *data = w83792d_update_device(dev);
 435         return sprintf(buf, "%u\n", DIV_FROM_REG(data->fan_div[nr - 1]));
 436 }
 437
 438 /*
 439  * Note: we save and restore the fan minimum here, because its value is
 440  * determined in part by the fan divisor.  This follows the principle of
 441  * least surprise; the user doesn't expect the fan minimum to change just
 442  * because the divisor changed.
 443  */
 444 static ssize_t
 445 store_fan_div(struct device *dev, struct device_attribute *attr,
 446                 const char *buf, size_t count)
 447 {
 448         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 449         int nr = sensor_attr->index - 1;
 450         struct i2c_client *client = to_i2c_client(dev);
 451         struct w83792d_data *data = i2c_get_clientdata(client);
 452         unsigned long min;
 453         /*u8 reg;*/
 454         u8 fan_div_reg = 0;
 455         u8 tmp_fan_div;
 456         unsigned long val;
 457         int err;
 458
 459         err = kstrtoul(buf, 10, &val);
 460         if (err)
 461                 return err;
 462
 463         /* Save fan_min */
 464         mutex_lock(&data->update_lock);
 465         min = FAN_FROM_REG(data->fan_min[nr],
 466                            DIV_FROM_REG(data->fan_div[nr]));
 467
 468         data->fan_div[nr] = DIV_TO_REG(val);
 469
 470         fan_div_reg = w83792d_read_value(client, W83792D_REG_FAN_DIV[nr >> 1]);
 471         fan_div_reg &= (nr & 0x01) ? 0x8f : 0xf8;
 472         tmp_fan_div = (nr & 0x01) ? (((data->fan_div[nr]) << 4) & 0x70)
 473                                         : ((data->fan_div[nr]) & 0x07);
 474         w83792d_write_value(client, W83792D_REG_FAN_DIV[nr >> 1],
 475                                         fan_div_reg | tmp_fan_div);
 476
 477         /* Restore fan_min */
 478         data->fan_min[nr] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr]));
 479         w83792d_write_value(client, W83792D_REG_FAN_MIN[nr], data->fan_min[nr]);
 480         mutex_unlock(&data->update_lock);
 481
 482         return count;
 483 }
 484
 485 /* read/write the temperature1, includes measured value and limits */
 486
 487 static ssize_t show_temp1(struct device *dev, struct device_attribute *attr,
 488                                 char *buf)
 489 {
 490         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 491         int nr = sensor_attr->index;
 492         struct w83792d_data *data = w83792d_update_device(dev);
 493         return sprintf(buf, "%d\n", TEMP1_FROM_REG(data->temp1[nr]));
 494 }
 495
 496 static ssize_t store_temp1(struct device *dev, struct device_attribute *attr,
 497                                 const char *buf, size_t count)
 498 {
 499         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 500         int nr = sensor_attr->index;
 501         struct i2c_client *client = to_i2c_client(dev);
 502         struct w83792d_data *data = i2c_get_clientdata(client);
 503         long val;
 504         int err;
 505
 506         err = kstrtol(buf, 10, &val);
 507         if (err)
 508                 return err;
 509
 510         mutex_lock(&data->update_lock);
 511         data->temp1[nr] = TEMP1_TO_REG(val);
 512         w83792d_write_value(client, W83792D_REG_TEMP1[nr],
 513                 data->temp1[nr]);
 514         mutex_unlock(&data->update_lock);
 515
 516         return count;
 517 }
 518
 519 /* read/write the temperature2-3, includes measured value and limits */
 520
 521 static ssize_t show_temp23(struct device *dev, struct device_attribute *attr,
 522                                 char *buf)
 523 {
 524         struct sensor_device_attribute_2 *sensor_attr
 525           = to_sensor_dev_attr_2(attr);
 526         int nr = sensor_attr->nr;
 527         int index = sensor_attr->index;
 528         struct w83792d_data *data = w83792d_update_device(dev);
 529         return sprintf(buf, "%ld\n",
 530                 (long)TEMP_ADD_FROM_REG(data->temp_add[nr][index],
 531                         data->temp_add[nr][index+1]));
 532 }
 533
 534 static ssize_t store_temp23(struct device *dev, struct device_attribute *attr,
 535                                 const char *buf, size_t count)
 536 {
 537         struct sensor_device_attribute_2 *sensor_attr
 538           = to_sensor_dev_attr_2(attr);
 539         int nr = sensor_attr->nr;
 540         int index = sensor_attr->index;
 541         struct i2c_client *client = to_i2c_client(dev);
 542         struct w83792d_data *data = i2c_get_clientdata(client);
 543         long val;
 544         int err;
 545
 546         err = kstrtol(buf, 10, &val);
 547         if (err)
 548                 return err;
 549
 550         mutex_lock(&data->update_lock);
 551         data->temp_add[nr][index] = TEMP_ADD_TO_REG_HIGH(val);
 552         data->temp_add[nr][index+1] = TEMP_ADD_TO_REG_LOW(val);
 553         w83792d_write_value(client, W83792D_REG_TEMP_ADD[nr][index],
 554                 data->temp_add[nr][index]);
 555         w83792d_write_value(client, W83792D_REG_TEMP_ADD[nr][index+1],
 556                 data->temp_add[nr][index+1]);
 557         mutex_unlock(&data->update_lock);
 558
 559         return count;
 560 }
 561
 562 /* get realtime status of all sensors items: voltage, temp, fan */
 563 static ssize_t
 564 alarms_show(struct device *dev, struct device_attribute *attr, char *buf)
 565 {
 566         struct w83792d_data *data = w83792d_update_device(dev);
 567         return sprintf(buf, "%d\n", data->alarms);
 568 }
 569
 570 static ssize_t show_alarm(struct device *dev,
 571                           struct device_attribute *attr, char *buf)
 572 {
 573         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 574         int nr = sensor_attr->index;
 575         struct w83792d_data *data = w83792d_update_device(dev);
 576         return sprintf(buf, "%d\n", (data->alarms >> nr) & 1);
 577 }
 578
 579 static ssize_t
 580 show_pwm(struct device *dev, struct device_attribute *attr,
 581                 char *buf)
 582 {
 583         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 584         int nr = sensor_attr->index;
 585         struct w83792d_data *data = w83792d_update_device(dev);
 586         return sprintf(buf, "%d\n", (data->pwm[nr] & 0x0f) << 4);
 587 }
 588
 589 static ssize_t
 590 show_pwmenable(struct device *dev, struct device_attribute *attr,
 591                         char *buf)
 592 {
 593         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 594         int nr = sensor_attr->index - 1;
 595         struct w83792d_data *data = w83792d_update_device(dev);
 596         long pwm_enable_tmp = 1;
 597
 598         switch (data->pwmenable[nr]) {
 599         case 0:
 600                 pwm_enable_tmp = 1; /* manual mode */
 601                 break;
 602         case 1:
 603                 pwm_enable_tmp = 3; /*thermal cruise/Smart Fan I */
 604                 break;
 605         case 2:
 606                 pwm_enable_tmp = 2; /* Smart Fan II */
 607                 break;
 608         }
 609
 610         return sprintf(buf, "%ld\n", pwm_enable_tmp);
 611 }
 612
 613 static ssize_t
 614 store_pwm(struct device *dev, struct device_attribute *attr,
 615                 const char *buf, size_t count)
 616 {
 617         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 618         int nr = sensor_attr->index;
 619         struct i2c_client *client = to_i2c_client(dev);
 620         struct w83792d_data *data = i2c_get_clientdata(client);
 621         unsigned long val;
 622         int err;
 623
 624         err = kstrtoul(buf, 10, &val);
 625         if (err)
 626                 return err;
 627         val = clamp_val(val, 0, 255) >> 4;
 628
 629         mutex_lock(&data->update_lock);
 630         val |= w83792d_read_value(client, W83792D_REG_PWM[nr]) & 0xf0;
 631         data->pwm[nr] = val;
 632         w83792d_write_value(client, W83792D_REG_PWM[nr], data->pwm[nr]);
 633         mutex_unlock(&data->update_lock);
 634
 635         return count;
 636 }
 637
 638 static ssize_t
 639 store_pwmenable(struct device *dev, struct device_attribute *attr,
 640                         const char *buf, size_t count)
 641 {
 642         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 643         int nr = sensor_attr->index - 1;
 644         struct i2c_client *client = to_i2c_client(dev);
 645         struct w83792d_data *data = i2c_get_clientdata(client);
 646         u8 fan_cfg_tmp, cfg1_tmp, cfg2_tmp, cfg3_tmp, cfg4_tmp;
 647         unsigned long val;
 648         int err;
 649
 650         err = kstrtoul(buf, 10, &val);
 651         if (err)
 652                 return err;
 653
 654         if (val < 1 || val > 3)
 655                 return -EINVAL;
 656
 657         mutex_lock(&data->update_lock);
 658         switch (val) {
 659         case 1:
 660                 data->pwmenable[nr] = 0; /* manual mode */
 661                 break;
 662         case 2:
 663                 data->pwmenable[nr] = 2; /* Smart Fan II */
 664                 break;
 665         case 3:
 666                 data->pwmenable[nr] = 1; /* thermal cruise/Smart Fan I */
 667                 break;
 668         }
 669         cfg1_tmp = data->pwmenable[0];
 670         cfg2_tmp = (data->pwmenable[1]) << 2;
 671         cfg3_tmp = (data->pwmenable[2]) << 4;
 672         cfg4_tmp = w83792d_read_value(client, W83792D_REG_FAN_CFG) & 0xc0;
 673         fan_cfg_tmp = ((cfg4_tmp | cfg3_tmp) | cfg2_tmp) | cfg1_tmp;
 674         w83792d_write_value(client, W83792D_REG_FAN_CFG, fan_cfg_tmp);
 675         mutex_unlock(&data->update_lock);
 676
 677         return count;
 678 }
 679
 680 static ssize_t
 681 show_pwm_mode(struct device *dev, struct device_attribute *attr,
 682                         char *buf)
 683 {
 684         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 685         int nr = sensor_attr->index;
 686         struct w83792d_data *data = w83792d_update_device(dev);
 687         return sprintf(buf, "%d\n", data->pwm[nr] >> 7);
 688 }
 689
 690 static ssize_t
 691 store_pwm_mode(struct device *dev, struct device_attribute *attr,
 692                         const char *buf, size_t count)
 693 {
 694         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 695         int nr = sensor_attr->index;
 696         struct i2c_client *client = to_i2c_client(dev);
 697         struct w83792d_data *data = i2c_get_clientdata(client);
 698         unsigned long val;
 699         int err;
 700
 701         err = kstrtoul(buf, 10, &val);
 702         if (err)
 703                 return err;
 704         if (val > 1)
 705                 return -EINVAL;
 706
 707         mutex_lock(&data->update_lock);
 708         data->pwm[nr] = w83792d_read_value(client, W83792D_REG_PWM[nr]);
 709         if (val) {                      /* PWM mode */
 710                 data->pwm[nr] |= 0x80;
 711         } else {                        /* DC mode */
 712                 data->pwm[nr] &= 0x7f;
 713         }
 714         w83792d_write_value(client, W83792D_REG_PWM[nr], data->pwm[nr]);
 715         mutex_unlock(&data->update_lock);
 716
 717         return count;
 718 }
 719
 720 static ssize_t
 721 intrusion0_alarm_show(struct device *dev, struct device_attribute *attr,
 722                       char *buf)
 723 {
 724         struct w83792d_data *data = w83792d_update_device(dev);
 725         return sprintf(buf, "%d\n", data->chassis);
 726 }
 727
 728 static ssize_t
 729 intrusion0_alarm_store(struct device *dev, struct device_attribute *attr,
 730                        const char *buf, size_t count)
 731 {
 732         struct i2c_client *client = to_i2c_client(dev);
 733         struct w83792d_data *data = i2c_get_clientdata(client);
 734         unsigned long val;
 735         u8 reg;
 736
 737         if (kstrtoul(buf, 10, &val) || val != 0)
 738                 return -EINVAL;
 739
 740         mutex_lock(&data->update_lock);
 741         reg = w83792d_read_value(client, W83792D_REG_CHASSIS_CLR);
 742         w83792d_write_value(client, W83792D_REG_CHASSIS_CLR, reg | 0x80);
 743         data->valid = false;            /* Force cache refresh */
 744         mutex_unlock(&data->update_lock);
 745
 746         return count;
 747 }
 748
 749 /* For Smart Fan I / Thermal Cruise */
 750 static ssize_t
 751 show_thermal_cruise(struct device *dev, struct device_attribute *attr,
 752                         char *buf)
 753 {
 754         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 755         int nr = sensor_attr->index;
 756         struct w83792d_data *data = w83792d_update_device(dev);
 757         return sprintf(buf, "%ld\n", (long)data->thermal_cruise[nr-1]);
 758 }
 759
 760 static ssize_t
 761 store_thermal_cruise(struct device *dev, struct device_attribute *attr,
 762                         const char *buf, size_t count)
 763 {
 764         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 765         int nr = sensor_attr->index - 1;
 766         struct i2c_client *client = to_i2c_client(dev);
 767         struct w83792d_data *data = i2c_get_clientdata(client);
 768         u8 target_tmp = 0, target_mask = 0;
 769         unsigned long val;
 770         int err;
 771
 772         err = kstrtoul(buf, 10, &val);
 773         if (err)
 774                 return err;
 775
 776         target_tmp = val;
 777         target_tmp = target_tmp & 0x7f;
 778         mutex_lock(&data->update_lock);
 779         target_mask = w83792d_read_value(client,
 780                                          W83792D_REG_THERMAL[nr]) & 0x80;
 781         data->thermal_cruise[nr] = clamp_val(target_tmp, 0, 255);
 782         w83792d_write_value(client, W83792D_REG_THERMAL[nr],
 783                 (data->thermal_cruise[nr]) | target_mask);
 784         mutex_unlock(&data->update_lock);
 785
 786         return count;
 787 }
 788
 789 /* For Smart Fan I/Thermal Cruise and Smart Fan II */
 790 static ssize_t
 791 show_tolerance(struct device *dev, struct device_attribute *attr,
 792                 char *buf)
 793 {
 794         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 795         int nr = sensor_attr->index;
 796         struct w83792d_data *data = w83792d_update_device(dev);
 797         return sprintf(buf, "%ld\n", (long)data->tolerance[nr-1]);
 798 }
 799
 800 static ssize_t
 801 store_tolerance(struct device *dev, struct device_attribute *attr,
 802                 const char *buf, size_t count)
 803 {
 804         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 805         int nr = sensor_attr->index - 1;
 806         struct i2c_client *client = to_i2c_client(dev);
 807         struct w83792d_data *data = i2c_get_clientdata(client);
 808         u8 tol_tmp, tol_mask;
 809         unsigned long val;
 810         int err;
 811
 812         err = kstrtoul(buf, 10, &val);
 813         if (err)
 814                 return err;
 815
 816         mutex_lock(&data->update_lock);
 817         tol_mask = w83792d_read_value(client,
 818                 W83792D_REG_TOLERANCE[nr]) & ((nr == 1) ? 0x0f : 0xf0);
 819         tol_tmp = clamp_val(val, 0, 15);
 820         tol_tmp &= 0x0f;
 821         data->tolerance[nr] = tol_tmp;
 822         if (nr == 1)
 823                 tol_tmp <<= 4;
 824         w83792d_write_value(client, W83792D_REG_TOLERANCE[nr],
 825                 tol_mask | tol_tmp);
 826         mutex_unlock(&data->update_lock);
 827
 828         return count;
 829 }
 830
 831 /* For Smart Fan II */
 832 static ssize_t
 833 show_sf2_point(struct device *dev, struct device_attribute *attr,
 834                 char *buf)
 835 {
 836         struct sensor_device_attribute_2 *sensor_attr
 837           = to_sensor_dev_attr_2(attr);
 838         int nr = sensor_attr->nr;
 839         int index = sensor_attr->index;
 840         struct w83792d_data *data = w83792d_update_device(dev);
 841         return sprintf(buf, "%ld\n", (long)data->sf2_points[index-1][nr-1]);
 842 }
 843
 844 static ssize_t
 845 store_sf2_point(struct device *dev, struct device_attribute *attr,
 846                 const char *buf, size_t count)
 847 {
 848         struct sensor_device_attribute_2 *sensor_attr
 849           = to_sensor_dev_attr_2(attr);
 850         int nr = sensor_attr->nr - 1;
 851         int index = sensor_attr->index - 1;
 852         struct i2c_client *client = to_i2c_client(dev);
 853         struct w83792d_data *data = i2c_get_clientdata(client);
 854         u8 mask_tmp = 0;
 855         unsigned long val;
 856         int err;
 857
 858         err = kstrtoul(buf, 10, &val);
 859         if (err)
 860                 return err;
 861
 862         mutex_lock(&data->update_lock);
 863         data->sf2_points[index][nr] = clamp_val(val, 0, 127);
 864         mask_tmp = w83792d_read_value(client,
 865                                         W83792D_REG_POINTS[index][nr]) & 0x80;
 866         w83792d_write_value(client, W83792D_REG_POINTS[index][nr],
 867                 mask_tmp|data->sf2_points[index][nr]);
 868         mutex_unlock(&data->update_lock);
 869
 870         return count;
 871 }
 872
 873 static ssize_t
 874 show_sf2_level(struct device *dev, struct device_attribute *attr,
 875                 char *buf)
 876 {
 877         struct sensor_device_attribute_2 *sensor_attr
 878           = to_sensor_dev_attr_2(attr);
 879         int nr = sensor_attr->nr;
 880         int index = sensor_attr->index;
 881         struct w83792d_data *data = w83792d_update_device(dev);
 882         return sprintf(buf, "%d\n",
 883                         (((data->sf2_levels[index-1][nr]) * 100) / 15));
 884 }
 885
 886 static ssize_t
 887 store_sf2_level(struct device *dev, struct device_attribute *attr,
 888                 const char *buf, size_t count)
 889 {
 890         struct sensor_device_attribute_2 *sensor_attr
 891           = to_sensor_dev_attr_2(attr);
 892         int nr = sensor_attr->nr;
 893         int index = sensor_attr->index - 1;
 894         struct i2c_client *client = to_i2c_client(dev);
 895         struct w83792d_data *data = i2c_get_clientdata(client);
 896         u8 mask_tmp = 0, level_tmp = 0;
 897         unsigned long val;
 898         int err;
 899
 900         err = kstrtoul(buf, 10, &val);
 901         if (err)
 902                 return err;
 903
 904         mutex_lock(&data->update_lock);
 905         data->sf2_levels[index][nr] = clamp_val((val * 15) / 100, 0, 15);
 906         mask_tmp = w83792d_read_value(client, W83792D_REG_LEVELS[index][nr])
 907                 & ((nr == 3) ? 0xf0 : 0x0f);
 908         if (nr == 3)
 909                 level_tmp = data->sf2_levels[index][nr];
 910         else
 911                 level_tmp = data->sf2_levels[index][nr] << 4;
 912         w83792d_write_value(client, W83792D_REG_LEVELS[index][nr],
 913                             level_tmp | mask_tmp);
 914         mutex_unlock(&data->update_lock);
 915
 916         return count;
 917 }
 918
 919
 920 static int
 921 w83792d_detect_subclients(struct i2c_client *new_client)
 922 {
 923         int i, id;
 924         int address = new_client->addr;
 925         u8 val;
 926         struct i2c_adapter *adapter = new_client->adapter;
 927
 928         id = i2c_adapter_id(adapter);
 929         if (force_subclients[0] == id && force_subclients[1] == address) {
 930                 for (i = 2; i <= 3; i++) {
 931                         if (force_subclients[i] < 0x48 ||
 932                             force_subclients[i] > 0x4f) {
 933                                 dev_err(&new_client->dev,
 934                                         "invalid subclient address %d; must be 0x48-0x4f\n",
 935                                         force_subclients[i]);
 936                                 return -ENODEV;
 937                         }
 938                 }
 939                 w83792d_write_value(new_client, W83792D_REG_I2C_SUBADDR,
 940                                         (force_subclients[2] & 0x07) |
 941                                         ((force_subclients[3] & 0x07) << 4));
 942         }
 943
 944         val = w83792d_read_value(new_client, W83792D_REG_I2C_SUBADDR);
 945
 946         if (!(val & 0x88) && (val & 0x7) == ((val >> 4) & 0x7)) {
 947                 dev_err(&new_client->dev,
 948                         "duplicate addresses 0x%x, use force_subclient\n", 0x48 + (val & 0x7));
 949                 return -ENODEV;
 950         }
 951
 952         if (!(val & 0x08))
 953                 devm_i2c_new_dummy_device(&new_client->dev, adapter, 0x48 + (val & 0x7));
 954
 955         if (!(val & 0x80))
 956                 devm_i2c_new_dummy_device(&new_client->dev, adapter, 0x48 + ((val >> 4) & 0x7));
 957
 958         return 0;
 959 }
 960
 961 static SENSOR_DEVICE_ATTR(in0_input, S_IRUGO, show_in, NULL, 0);
 962 static SENSOR_DEVICE_ATTR(in1_input, S_IRUGO, show_in, NULL, 1);
 963 static SENSOR_DEVICE_ATTR(in2_input, S_IRUGO, show_in, NULL, 2);
 964 static SENSOR_DEVICE_ATTR(in3_input, S_IRUGO, show_in, NULL, 3);
 965 static SENSOR_DEVICE_ATTR(in4_input, S_IRUGO, show_in, NULL, 4);
 966 static SENSOR_DEVICE_ATTR(in5_input, S_IRUGO, show_in, NULL, 5);
 967 static SENSOR_DEVICE_ATTR(in6_input, S_IRUGO, show_in, NULL, 6);
 968 static SENSOR_DEVICE_ATTR(in7_input, S_IRUGO, show_in, NULL, 7);
 969 static SENSOR_DEVICE_ATTR(in8_input, S_IRUGO, show_in, NULL, 8);
 970 static SENSOR_DEVICE_ATTR(in0_min, S_IWUSR | S_IRUGO,
 971                         show_in_min, store_in_min, 0);
 972 static SENSOR_DEVICE_ATTR(in1_min, S_IWUSR | S_IRUGO,
 973                         show_in_min, store_in_min, 1);
 974 static SENSOR_DEVICE_ATTR(in2_min, S_IWUSR | S_IRUGO,
 975                         show_in_min, store_in_min, 2);
 976 static SENSOR_DEVICE_ATTR(in3_min, S_IWUSR | S_IRUGO,
 977                         show_in_min, store_in_min, 3);
 978 static SENSOR_DEVICE_ATTR(in4_min, S_IWUSR | S_IRUGO,
 979                         show_in_min, store_in_min, 4);
 980 static SENSOR_DEVICE_ATTR(in5_min, S_IWUSR | S_IRUGO,
 981                         show_in_min, store_in_min, 5);
 982 static SENSOR_DEVICE_ATTR(in6_min, S_IWUSR | S_IRUGO,
 983                         show_in_min, store_in_min, 6);
 984 static SENSOR_DEVICE_ATTR(in7_min, S_IWUSR | S_IRUGO,
 985                         show_in_min, store_in_min, 7);
 986 static SENSOR_DEVICE_ATTR(in8_min, S_IWUSR | S_IRUGO,
 987                         show_in_min, store_in_min, 8);
 988 static SENSOR_DEVICE_ATTR(in0_max, S_IWUSR | S_IRUGO,
 989                         show_in_max, store_in_max, 0);
 990 static SENSOR_DEVICE_ATTR(in1_max, S_IWUSR | S_IRUGO,
 991                         show_in_max, store_in_max, 1);
 992 static SENSOR_DEVICE_ATTR(in2_max, S_IWUSR | S_IRUGO,
 993                         show_in_max, store_in_max, 2);
 994 static SENSOR_DEVICE_ATTR(in3_max, S_IWUSR | S_IRUGO,
 995                         show_in_max, store_in_max, 3);
 996 static SENSOR_DEVICE_ATTR(in4_max, S_IWUSR | S_IRUGO,
 997                         show_in_max, store_in_max, 4);
 998 static SENSOR_DEVICE_ATTR(in5_max, S_IWUSR | S_IRUGO,
 999                         show_in_max, store_in_max, 5);
1000 static SENSOR_DEVICE_ATTR(in6_max, S_IWUSR | S_IRUGO,
1001                         show_in_max, store_in_max, 6);
1002 static SENSOR_DEVICE_ATTR(in7_max, S_IWUSR | S_IRUGO,
1003                         show_in_max, store_in_max, 7);
1004 static SENSOR_DEVICE_ATTR(in8_max, S_IWUSR | S_IRUGO,
1005                         show_in_max, store_in_max, 8);
1006 static SENSOR_DEVICE_ATTR_2(temp1_input, S_IRUGO, show_temp1, NULL, 0, 0);
1007 static SENSOR_DEVICE_ATTR_2(temp2_input, S_IRUGO, show_temp23, NULL, 0, 0);
1008 static SENSOR_DEVICE_ATTR_2(temp3_input, S_IRUGO, show_temp23, NULL, 1, 0);
1009 static SENSOR_DEVICE_ATTR_2(temp1_max, S_IRUGO | S_IWUSR,
1010                         show_temp1, store_temp1, 0, 1);
1011 static SENSOR_DEVICE_ATTR_2(temp2_max, S_IRUGO | S_IWUSR, show_temp23,
1012                         store_temp23, 0, 2);
1013 static SENSOR_DEVICE_ATTR_2(temp3_max, S_IRUGO | S_IWUSR, show_temp23,
1014                         store_temp23, 1, 2);
1015 static SENSOR_DEVICE_ATTR_2(temp1_max_hyst, S_IRUGO | S_IWUSR,
1016                         show_temp1, store_temp1, 0, 2);
1017 static SENSOR_DEVICE_ATTR_2(temp2_max_hyst, S_IRUGO | S_IWUSR,
1018                         show_temp23, store_temp23, 0, 4);
1019 static SENSOR_DEVICE_ATTR_2(temp3_max_hyst, S_IRUGO | S_IWUSR,
1020                         show_temp23, store_temp23, 1, 4);
1021 static DEVICE_ATTR_RO(alarms);
1022 static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0);
1023 static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1);
1024 static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 2);
1025 static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 3);
1026 static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 4);
1027 static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 5);
1028 static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 6);
1029 static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 7);
1030 static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 8);
1031 static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 9);
1032 static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 10);
1033 static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 11);
1034 static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 12);
1035 static SENSOR_DEVICE_ATTR(fan7_alarm, S_IRUGO, show_alarm, NULL, 15);
1036 static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 19);
1037 static SENSOR_DEVICE_ATTR(in8_alarm, S_IRUGO, show_alarm, NULL, 20);
1038 static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 21);
1039 static SENSOR_DEVICE_ATTR(fan5_alarm, S_IRUGO, show_alarm, NULL, 22);
1040 static SENSOR_DEVICE_ATTR(fan6_alarm, S_IRUGO, show_alarm, NULL, 23);
1041 static DEVICE_ATTR_RW(intrusion0_alarm);
1042 static SENSOR_DEVICE_ATTR(pwm1, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 0);
1043 static SENSOR_DEVICE_ATTR(pwm2, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 1);
1044 static SENSOR_DEVICE_ATTR(pwm3, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 2);
1045 static SENSOR_DEVICE_ATTR(pwm4, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 3);
1046 static SENSOR_DEVICE_ATTR(pwm5, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 4);
1047 static SENSOR_DEVICE_ATTR(pwm6, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 5);
1048 static SENSOR_DEVICE_ATTR(pwm7, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 6);
1049 static SENSOR_DEVICE_ATTR(pwm1_enable, S_IWUSR | S_IRUGO,
1050                         show_pwmenable, store_pwmenable, 1);
1051 static SENSOR_DEVICE_ATTR(pwm2_enable, S_IWUSR | S_IRUGO,
1052                         show_pwmenable, store_pwmenable, 2);
1053 static SENSOR_DEVICE_ATTR(pwm3_enable, S_IWUSR | S_IRUGO,
1054                         show_pwmenable, store_pwmenable, 3);
1055 static SENSOR_DEVICE_ATTR(pwm1_mode, S_IWUSR | S_IRUGO,
1056                         show_pwm_mode, store_pwm_mode, 0);
1057 static SENSOR_DEVICE_ATTR(pwm2_mode, S_IWUSR | S_IRUGO,
1058                         show_pwm_mode, store_pwm_mode, 1);
1059 static SENSOR_DEVICE_ATTR(pwm3_mode, S_IWUSR | S_IRUGO,
1060                         show_pwm_mode, store_pwm_mode, 2);
1061 static SENSOR_DEVICE_ATTR(pwm4_mode, S_IWUSR | S_IRUGO,
1062                         show_pwm_mode, store_pwm_mode, 3);
1063 static SENSOR_DEVICE_ATTR(pwm5_mode, S_IWUSR | S_IRUGO,
1064                         show_pwm_mode, store_pwm_mode, 4);
1065 static SENSOR_DEVICE_ATTR(pwm6_mode, S_IWUSR | S_IRUGO,
1066                         show_pwm_mode, store_pwm_mode, 5);
1067 static SENSOR_DEVICE_ATTR(pwm7_mode, S_IWUSR | S_IRUGO,
1068                         show_pwm_mode, store_pwm_mode, 6);
1069 static SENSOR_DEVICE_ATTR(tolerance1, S_IWUSR | S_IRUGO,
1070                         show_tolerance, store_tolerance, 1);
1071 static SENSOR_DEVICE_ATTR(tolerance2, S_IWUSR | S_IRUGO,
1072                         show_tolerance, store_tolerance, 2);
1073 static SENSOR_DEVICE_ATTR(tolerance3, S_IWUSR | S_IRUGO,
1074                         show_tolerance, store_tolerance, 3);
1075 static SENSOR_DEVICE_ATTR(thermal_cruise1, S_IWUSR | S_IRUGO,
1076                         show_thermal_cruise, store_thermal_cruise, 1);
1077 static SENSOR_DEVICE_ATTR(thermal_cruise2, S_IWUSR | S_IRUGO,
1078                         show_thermal_cruise, store_thermal_cruise, 2);
1079 static SENSOR_DEVICE_ATTR(thermal_cruise3, S_IWUSR | S_IRUGO,
1080                         show_thermal_cruise, store_thermal_cruise, 3);
1081 static SENSOR_DEVICE_ATTR_2(sf2_point1_fan1, S_IRUGO | S_IWUSR,
1082                         show_sf2_point, store_sf2_point, 1, 1);
1083 static SENSOR_DEVICE_ATTR_2(sf2_point2_fan1, S_IRUGO | S_IWUSR,
1084                         show_sf2_point, store_sf2_point, 2, 1);
1085 static SENSOR_DEVICE_ATTR_2(sf2_point3_fan1, S_IRUGO | S_IWUSR,
1086                         show_sf2_point, store_sf2_point, 3, 1);
1087 static SENSOR_DEVICE_ATTR_2(sf2_point4_fan1, S_IRUGO | S_IWUSR,
1088                         show_sf2_point, store_sf2_point, 4, 1);
1089 static SENSOR_DEVICE_ATTR_2(sf2_point1_fan2, S_IRUGO | S_IWUSR,
1090                         show_sf2_point, store_sf2_point, 1, 2);
1091 static SENSOR_DEVICE_ATTR_2(sf2_point2_fan2, S_IRUGO | S_IWUSR,
1092                         show_sf2_point, store_sf2_point, 2, 2);
1093 static SENSOR_DEVICE_ATTR_2(sf2_point3_fan2, S_IRUGO | S_IWUSR,
1094                         show_sf2_point, store_sf2_point, 3, 2);
1095 static SENSOR_DEVICE_ATTR_2(sf2_point4_fan2, S_IRUGO | S_IWUSR,
1096                         show_sf2_point, store_sf2_point, 4, 2);
1097 static SENSOR_DEVICE_ATTR_2(sf2_point1_fan3, S_IRUGO | S_IWUSR,
1098                         show_sf2_point, store_sf2_point, 1, 3);
1099 static SENSOR_DEVICE_ATTR_2(sf2_point2_fan3, S_IRUGO | S_IWUSR,
1100                         show_sf2_point, store_sf2_point, 2, 3);
1101 static SENSOR_DEVICE_ATTR_2(sf2_point3_fan3, S_IRUGO | S_IWUSR,
1102                         show_sf2_point, store_sf2_point, 3, 3);
1103 static SENSOR_DEVICE_ATTR_2(sf2_point4_fan3, S_IRUGO | S_IWUSR,
1104                         show_sf2_point, store_sf2_point, 4, 3);
1105 static SENSOR_DEVICE_ATTR_2(sf2_level1_fan1, S_IRUGO | S_IWUSR,
1106                         show_sf2_level, store_sf2_level, 1, 1);
1107 static SENSOR_DEVICE_ATTR_2(sf2_level2_fan1, S_IRUGO | S_IWUSR,
1108                         show_sf2_level, store_sf2_level, 2, 1);
1109 static SENSOR_DEVICE_ATTR_2(sf2_level3_fan1, S_IRUGO | S_IWUSR,
1110                         show_sf2_level, store_sf2_level, 3, 1);
1111 static SENSOR_DEVICE_ATTR_2(sf2_level1_fan2, S_IRUGO | S_IWUSR,
1112                         show_sf2_level, store_sf2_level, 1, 2);
1113 static SENSOR_DEVICE_ATTR_2(sf2_level2_fan2, S_IRUGO | S_IWUSR,
1114                         show_sf2_level, store_sf2_level, 2, 2);
1115 static SENSOR_DEVICE_ATTR_2(sf2_level3_fan2, S_IRUGO | S_IWUSR,
1116                         show_sf2_level, store_sf2_level, 3, 2);
1117 static SENSOR_DEVICE_ATTR_2(sf2_level1_fan3, S_IRUGO | S_IWUSR,
1118                         show_sf2_level, store_sf2_level, 1, 3);
1119 static SENSOR_DEVICE_ATTR_2(sf2_level2_fan3, S_IRUGO | S_IWUSR,
1120                         show_sf2_level, store_sf2_level, 2, 3);
1121 static SENSOR_DEVICE_ATTR_2(sf2_level3_fan3, S_IRUGO | S_IWUSR,
1122                         show_sf2_level, store_sf2_level, 3, 3);
1123 static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 1);
1124 static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 2);
1125 static SENSOR_DEVICE_ATTR(fan3_input, S_IRUGO, show_fan, NULL, 3);
1126 static SENSOR_DEVICE_ATTR(fan4_input, S_IRUGO, show_fan, NULL, 4);
1127 static SENSOR_DEVICE_ATTR(fan5_input, S_IRUGO, show_fan, NULL, 5);
1128 static SENSOR_DEVICE_ATTR(fan6_input, S_IRUGO, show_fan, NULL, 6);
1129 static SENSOR_DEVICE_ATTR(fan7_input, S_IRUGO, show_fan, NULL, 7);
1130 static SENSOR_DEVICE_ATTR(fan1_min, S_IWUSR | S_IRUGO,
1131                         show_fan_min, store_fan_min, 1);
1132 static SENSOR_DEVICE_ATTR(fan2_min, S_IWUSR | S_IRUGO,
1133                         show_fan_min, store_fan_min, 2);
1134 static SENSOR_DEVICE_ATTR(fan3_min, S_IWUSR | S_IRUGO,
1135                         show_fan_min, store_fan_min, 3);
1136 static SENSOR_DEVICE_ATTR(fan4_min, S_IWUSR | S_IRUGO,
1137                         show_fan_min, store_fan_min, 4);
1138 static SENSOR_DEVICE_ATTR(fan5_min, S_IWUSR | S_IRUGO,
1139                         show_fan_min, store_fan_min, 5);
1140 static SENSOR_DEVICE_ATTR(fan6_min, S_IWUSR | S_IRUGO,
1141                         show_fan_min, store_fan_min, 6);
1142 static SENSOR_DEVICE_ATTR(fan7_min, S_IWUSR | S_IRUGO,
1143                         show_fan_min, store_fan_min, 7);
1144 static SENSOR_DEVICE_ATTR(fan1_div, S_IWUSR | S_IRUGO,
1145                         show_fan_div, store_fan_div, 1);
1146 static SENSOR_DEVICE_ATTR(fan2_div, S_IWUSR | S_IRUGO,
1147                         show_fan_div, store_fan_div, 2);
1148 static SENSOR_DEVICE_ATTR(fan3_div, S_IWUSR | S_IRUGO,
1149                         show_fan_div, store_fan_div, 3);
1150 static SENSOR_DEVICE_ATTR(fan4_div, S_IWUSR | S_IRUGO,
1151                         show_fan_div, store_fan_div, 4);
1152 static SENSOR_DEVICE_ATTR(fan5_div, S_IWUSR | S_IRUGO,
1153                         show_fan_div, store_fan_div, 5);
1154 static SENSOR_DEVICE_ATTR(fan6_div, S_IWUSR | S_IRUGO,
1155                         show_fan_div, store_fan_div, 6);
1156 static SENSOR_DEVICE_ATTR(fan7_div, S_IWUSR | S_IRUGO,
1157                         show_fan_div, store_fan_div, 7);
1158
1159 static struct attribute *w83792d_attributes_fan[4][7] = {
1160         {
1161                 &sensor_dev_attr_fan4_input.dev_attr.attr,
1162                 &sensor_dev_attr_fan4_min.dev_attr.attr,
1163                 &sensor_dev_attr_fan4_div.dev_attr.attr,
1164                 &sensor_dev_attr_fan4_alarm.dev_attr.attr,
1165                 &sensor_dev_attr_pwm4.dev_attr.attr,
1166                 &sensor_dev_attr_pwm4_mode.dev_attr.attr,
1167                 NULL
1168         }, {
1169                 &sensor_dev_attr_fan5_input.dev_attr.attr,
1170                 &sensor_dev_attr_fan5_min.dev_attr.attr,
1171                 &sensor_dev_attr_fan5_div.dev_attr.attr,
1172                 &sensor_dev_attr_fan5_alarm.dev_attr.attr,
1173                 &sensor_dev_attr_pwm5.dev_attr.attr,
1174                 &sensor_dev_attr_pwm5_mode.dev_attr.attr,
1175                 NULL
1176         }, {
1177                 &sensor_dev_attr_fan6_input.dev_attr.attr,
1178                 &sensor_dev_attr_fan6_min.dev_attr.attr,
1179                 &sensor_dev_attr_fan6_div.dev_attr.attr,
1180                 &sensor_dev_attr_fan6_alarm.dev_attr.attr,
1181                 &sensor_dev_attr_pwm6.dev_attr.attr,
1182                 &sensor_dev_attr_pwm6_mode.dev_attr.attr,
1183                 NULL
1184         }, {
1185                 &sensor_dev_attr_fan7_input.dev_attr.attr,
1186                 &sensor_dev_attr_fan7_min.dev_attr.attr,
1187                 &sensor_dev_attr_fan7_div.dev_attr.attr,
1188                 &sensor_dev_attr_fan7_alarm.dev_attr.attr,
1189                 &sensor_dev_attr_pwm7.dev_attr.attr,
1190                 &sensor_dev_attr_pwm7_mode.dev_attr.attr,
1191                 NULL
1192         }
1193 };
1194
1195 static const struct attribute_group w83792d_group_fan[4] = {
1196         { .attrs = w83792d_attributes_fan[0] },
1197         { .attrs = w83792d_attributes_fan[1] },
1198         { .attrs = w83792d_attributes_fan[2] },
1199         { .attrs = w83792d_attributes_fan[3] },
1200 };
1201
1202 static struct attribute *w83792d_attributes[] = {
1203         &sensor_dev_attr_in0_input.dev_attr.attr,
1204         &sensor_dev_attr_in0_max.dev_attr.attr,
1205         &sensor_dev_attr_in0_min.dev_attr.attr,
1206         &sensor_dev_attr_in1_input.dev_attr.attr,
1207         &sensor_dev_attr_in1_max.dev_attr.attr,
1208         &sensor_dev_attr_in1_min.dev_attr.attr,
1209         &sensor_dev_attr_in2_input.dev_attr.attr,
1210         &sensor_dev_attr_in2_max.dev_attr.attr,
1211         &sensor_dev_attr_in2_min.dev_attr.attr,
1212         &sensor_dev_attr_in3_input.dev_attr.attr,
1213         &sensor_dev_attr_in3_max.dev_attr.attr,
1214         &sensor_dev_attr_in3_min.dev_attr.attr,
1215         &sensor_dev_attr_in4_input.dev_attr.attr,
1216         &sensor_dev_attr_in4_max.dev_attr.attr,
1217         &sensor_dev_attr_in4_min.dev_attr.attr,
1218         &sensor_dev_attr_in5_input.dev_attr.attr,
1219         &sensor_dev_attr_in5_max.dev_attr.attr,
1220         &sensor_dev_attr_in5_min.dev_attr.attr,
1221         &sensor_dev_attr_in6_input.dev_attr.attr,
1222         &sensor_dev_attr_in6_max.dev_attr.attr,
1223         &sensor_dev_attr_in6_min.dev_attr.attr,
1224         &sensor_dev_attr_in7_input.dev_attr.attr,
1225         &sensor_dev_attr_in7_max.dev_attr.attr,
1226         &sensor_dev_attr_in7_min.dev_attr.attr,
1227         &sensor_dev_attr_in8_input.dev_attr.attr,
1228         &sensor_dev_attr_in8_max.dev_attr.attr,
1229         &sensor_dev_attr_in8_min.dev_attr.attr,
1230         &sensor_dev_attr_in0_alarm.dev_attr.attr,
1231         &sensor_dev_attr_in1_alarm.dev_attr.attr,
1232         &sensor_dev_attr_in2_alarm.dev_attr.attr,
1233         &sensor_dev_attr_in3_alarm.dev_attr.attr,
1234         &sensor_dev_attr_in4_alarm.dev_attr.attr,
1235         &sensor_dev_attr_in5_alarm.dev_attr.attr,
1236         &sensor_dev_attr_in6_alarm.dev_attr.attr,
1237         &sensor_dev_attr_in7_alarm.dev_attr.attr,
1238         &sensor_dev_attr_in8_alarm.dev_attr.attr,
1239         &sensor_dev_attr_temp1_input.dev_attr.attr,
1240         &sensor_dev_attr_temp1_max.dev_attr.attr,
1241         &sensor_dev_attr_temp1_max_hyst.dev_attr.attr,
1242         &sensor_dev_attr_temp2_input.dev_attr.attr,
1243         &sensor_dev_attr_temp2_max.dev_attr.attr,
1244         &sensor_dev_attr_temp2_max_hyst.dev_attr.attr,
1245         &sensor_dev_attr_temp3_input.dev_attr.attr,
1246         &sensor_dev_attr_temp3_max.dev_attr.attr,
1247         &sensor_dev_attr_temp3_max_hyst.dev_attr.attr,
1248         &sensor_dev_attr_temp1_alarm.dev_attr.attr,
1249         &sensor_dev_attr_temp2_alarm.dev_attr.attr,
1250         &sensor_dev_attr_temp3_alarm.dev_attr.attr,
1251         &sensor_dev_attr_pwm1.dev_attr.attr,
1252         &sensor_dev_attr_pwm1_mode.dev_attr.attr,
1253         &sensor_dev_attr_pwm1_enable.dev_attr.attr,
1254         &sensor_dev_attr_pwm2.dev_attr.attr,
1255         &sensor_dev_attr_pwm2_mode.dev_attr.attr,
1256         &sensor_dev_attr_pwm2_enable.dev_attr.attr,
1257         &sensor_dev_attr_pwm3.dev_attr.attr,
1258         &sensor_dev_attr_pwm3_mode.dev_attr.attr,
1259         &sensor_dev_attr_pwm3_enable.dev_attr.attr,
1260         &dev_attr_alarms.attr,
1261         &dev_attr_intrusion0_alarm.attr,
1262         &sensor_dev_attr_tolerance1.dev_attr.attr,
1263         &sensor_dev_attr_thermal_cruise1.dev_attr.attr,
1264         &sensor_dev_attr_tolerance2.dev_attr.attr,
1265         &sensor_dev_attr_thermal_cruise2.dev_attr.attr,
1266         &sensor_dev_attr_tolerance3.dev_attr.attr,
1267         &sensor_dev_attr_thermal_cruise3.dev_attr.attr,
1268         &sensor_dev_attr_sf2_point1_fan1.dev_attr.attr,
1269         &sensor_dev_attr_sf2_point2_fan1.dev_attr.attr,
1270         &sensor_dev_attr_sf2_point3_fan1.dev_attr.attr,
1271         &sensor_dev_attr_sf2_point4_fan1.dev_attr.attr,
1272         &sensor_dev_attr_sf2_point1_fan2.dev_attr.attr,
1273         &sensor_dev_attr_sf2_point2_fan2.dev_attr.attr,
1274         &sensor_dev_attr_sf2_point3_fan2.dev_attr.attr,
1275         &sensor_dev_attr_sf2_point4_fan2.dev_attr.attr,
1276         &sensor_dev_attr_sf2_point1_fan3.dev_attr.attr,
1277         &sensor_dev_attr_sf2_point2_fan3.dev_attr.attr,
1278         &sensor_dev_attr_sf2_point3_fan3.dev_attr.attr,
1279         &sensor_dev_attr_sf2_point4_fan3.dev_attr.attr,
1280         &sensor_dev_attr_sf2_level1_fan1.dev_attr.attr,
1281         &sensor_dev_attr_sf2_level2_fan1.dev_attr.attr,
1282         &sensor_dev_attr_sf2_level3_fan1.dev_attr.attr,
1283         &sensor_dev_attr_sf2_level1_fan2.dev_attr.attr,
1284         &sensor_dev_attr_sf2_level2_fan2.dev_attr.attr,
1285         &sensor_dev_attr_sf2_level3_fan2.dev_attr.attr,
1286         &sensor_dev_attr_sf2_level1_fan3.dev_attr.attr,
1287         &sensor_dev_attr_sf2_level2_fan3.dev_attr.attr,
1288         &sensor_dev_attr_sf2_level3_fan3.dev_attr.attr,
1289         &sensor_dev_attr_fan1_input.dev_attr.attr,
1290         &sensor_dev_attr_fan1_min.dev_attr.attr,
1291         &sensor_dev_attr_fan1_div.dev_attr.attr,
1292         &sensor_dev_attr_fan1_alarm.dev_attr.attr,
1293         &sensor_dev_attr_fan2_input.dev_attr.attr,
1294         &sensor_dev_attr_fan2_min.dev_attr.attr,
1295         &sensor_dev_attr_fan2_div.dev_attr.attr,
1296         &sensor_dev_attr_fan2_alarm.dev_attr.attr,
1297         &sensor_dev_attr_fan3_input.dev_attr.attr,
1298         &sensor_dev_attr_fan3_min.dev_attr.attr,
1299         &sensor_dev_attr_fan3_div.dev_attr.attr,
1300         &sensor_dev_attr_fan3_alarm.dev_attr.attr,
1301         NULL
1302 };
1303
1304 static const struct attribute_group w83792d_group = {
1305         .attrs = w83792d_attributes,
1306 };
1307
1308 /* Return 0 if detection is successful, -ENODEV otherwise */
1309 static int
1310 w83792d_detect(struct i2c_client *client, struct i2c_board_info *info)
1311 {
1312         struct i2c_adapter *adapter = client->adapter;
1313         int val1, val2;
1314         unsigned short address = client->addr;
1315
1316         if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
1317                 return -ENODEV;
1318
1319         if (w83792d_read_value(client, W83792D_REG_CONFIG) & 0x80)
1320                 return -ENODEV;
1321
1322         val1 = w83792d_read_value(client, W83792D_REG_BANK);
1323         val2 = w83792d_read_value(client, W83792D_REG_CHIPMAN);
1324         /* Check for Winbond ID if in bank 0 */
1325         if (!(val1 & 0x07)) {  /* is Bank0 */
1326                 if ((!(val1 & 0x80) && val2 != 0xa3) ||
1327                     ((val1 & 0x80) && val2 != 0x5c))
1328                         return -ENODEV;
1329         }
1330         /*
1331          * If Winbond chip, address of chip and W83792D_REG_I2C_ADDR
1332          * should match
1333          */
1334         if (w83792d_read_value(client, W83792D_REG_I2C_ADDR) != address)
1335                 return -ENODEV;
1336
1337         /*  Put it now into bank 0 and Vendor ID High Byte */
1338         w83792d_write_value(client,
1339                             W83792D_REG_BANK,
1340                             (w83792d_read_value(client,
1341                                 W83792D_REG_BANK) & 0x78) | 0x80);
1342
1343         /* Determine the chip type. */
1344         val1 = w83792d_read_value(client, W83792D_REG_WCHIPID);
1345         val2 = w83792d_read_value(client, W83792D_REG_CHIPMAN);
1346         if (val1 != 0x7a || val2 != 0x5c)
1347                 return -ENODEV;
1348
1349         strlcpy(info->type, "w83792d", I2C_NAME_SIZE);
1350
1351         return 0;
1352 }
1353
1354 static int
1355 w83792d_probe(struct i2c_client *client)
1356 {
1357         struct w83792d_data *data;
1358         struct device *dev = &client->dev;
1359         int i, val1, err;
1360
1361         data = devm_kzalloc(dev, sizeof(struct w83792d_data), GFP_KERNEL);
1362         if (!data)
1363                 return -ENOMEM;
1364
1365         i2c_set_clientdata(client, data);
1366         mutex_init(&data->update_lock);
1367
1368         err = w83792d_detect_subclients(client);
1369         if (err)
1370                 return err;
1371
1372         /* Initialize the chip */
1373         w83792d_init_client(client);
1374
1375         /* A few vars need to be filled upon startup */
1376         for (i = 0; i < 7; i++) {
1377                 data->fan_min[i] = w83792d_read_value(client,
1378                                         W83792D_REG_FAN_MIN[i]);
1379         }
1380
1381         /* Register sysfs hooks */
1382         err = sysfs_create_group(&dev->kobj, &w83792d_group);
1383         if (err)
1384                 return err;
1385
1386         /*
1387          * Read GPIO enable register to check if pins for fan 4,5 are used as
1388          * GPIO
1389          */
1390         val1 = w83792d_read_value(client, W83792D_REG_GPIO_EN);
1391
1392         if (!(val1 & 0x40)) {
1393                 err = sysfs_create_group(&dev->kobj, &w83792d_group_fan[0]);
1394                 if (err)
1395                         goto exit_remove_files;
1396         }
1397
1398         if (!(val1 & 0x20)) {
1399                 err = sysfs_create_group(&dev->kobj, &w83792d_group_fan[1]);
1400                 if (err)
1401                         goto exit_remove_files;
1402         }
1403
1404         val1 = w83792d_read_value(client, W83792D_REG_PIN);
1405         if (val1 & 0x40) {
1406                 err = sysfs_create_group(&dev->kobj, &w83792d_group_fan[2]);
1407                 if (err)
1408                         goto exit_remove_files;
1409         }
1410
1411         if (val1 & 0x04) {
1412                 err = sysfs_create_group(&dev->kobj, &w83792d_group_fan[3]);
1413                 if (err)
1414                         goto exit_remove_files;
1415         }
1416
1417         data->hwmon_dev = hwmon_device_register(dev);
1418         if (IS_ERR(data->hwmon_dev)) {
1419                 err = PTR_ERR(data->hwmon_dev);
1420                 goto exit_remove_files;
1421         }
1422
1423         return 0;
1424
1425 exit_remove_files:
1426         sysfs_remove_group(&dev->kobj, &w83792d_group);
1427         for (i = 0; i < ARRAY_SIZE(w83792d_group_fan); i++)
1428                 sysfs_remove_group(&dev->kobj, &w83792d_group_fan[i]);
1429         return err;
1430 }
1431
1432 static int
1433 w83792d_remove(struct i2c_client *client)
1434 {
1435         struct w83792d_data *data = i2c_get_clientdata(client);
1436         int i;
1437
1438         hwmon_device_unregister(data->hwmon_dev);
1439         sysfs_remove_group(&client->dev.kobj, &w83792d_group);
1440         for (i = 0; i < ARRAY_SIZE(w83792d_group_fan); i++)
1441                 sysfs_remove_group(&client->dev.kobj,
1442                                    &w83792d_group_fan[i]);
1443
1444         return 0;
1445 }
1446
1447 static void
1448 w83792d_init_client(struct i2c_client *client)
1449 {
1450         u8 temp2_cfg, temp3_cfg, vid_in_b;
1451
1452         if (init)
1453                 w83792d_write_value(client, W83792D_REG_CONFIG, 0x80);
1454
1455         /*
1456          * Clear the bit6 of W83792D_REG_VID_IN_B(set it into 0):
1457          * W83792D_REG_VID_IN_B bit6 = 0: the high/low limit of
1458          * vin0/vin1 can be modified by user;
1459          * W83792D_REG_VID_IN_B bit6 = 1: the high/low limit of
1460          * vin0/vin1 auto-updated, can NOT be modified by user.
1461          */
1462         vid_in_b = w83792d_read_value(client, W83792D_REG_VID_IN_B);
1463         w83792d_write_value(client, W83792D_REG_VID_IN_B,
1464                             vid_in_b & 0xbf);
1465
1466         temp2_cfg = w83792d_read_value(client, W83792D_REG_TEMP2_CONFIG);
1467         temp3_cfg = w83792d_read_value(client, W83792D_REG_TEMP3_CONFIG);
1468         w83792d_write_value(client, W83792D_REG_TEMP2_CONFIG,
1469                                 temp2_cfg & 0xe6);
1470         w83792d_write_value(client, W83792D_REG_TEMP3_CONFIG,
1471                                 temp3_cfg & 0xe6);
1472
1473         /* Start monitoring */
1474         w83792d_write_value(client, W83792D_REG_CONFIG,
1475                             (w83792d_read_value(client,
1476                                                 W83792D_REG_CONFIG) & 0xf7)
1477                             | 0x01);
1478 }
1479
1480 static struct w83792d_data *w83792d_update_device(struct device *dev)
1481 {
1482         struct i2c_client *client = to_i2c_client(dev);
1483         struct w83792d_data *data = i2c_get_clientdata(client);
1484         int i, j;
1485         u8 reg_array_tmp[4], reg_tmp;
1486
1487         mutex_lock(&data->update_lock);
1488
1489         if (time_after
1490             (jiffies - data->last_updated, (unsigned long) (HZ * 3))
1491             || time_before(jiffies, data->last_updated) || !data->valid) {
1492                 dev_dbg(dev, "Starting device update\n");
1493
1494                 /* Update the voltages measured value and limits */
1495                 for (i = 0; i < 9; i++) {
1496                         data->in[i] = w83792d_read_value(client,
1497                                                 W83792D_REG_IN[i]);
1498                         data->in_max[i] = w83792d_read_value(client,
1499                                                 W83792D_REG_IN_MAX[i]);
1500                         data->in_min[i] = w83792d_read_value(client,
1501                                                 W83792D_REG_IN_MIN[i]);
1502                 }
1503                 data->low_bits = w83792d_read_value(client,
1504                                                 W83792D_REG_LOW_BITS1) +
1505                                  (w83792d_read_value(client,
1506                                                 W83792D_REG_LOW_BITS2) << 8);
1507                 for (i = 0; i < 7; i++) {
1508                         /* Update the Fan measured value and limits */
1509                         data->fan[i] = w83792d_read_value(client,
1510                                                 W83792D_REG_FAN[i]);
1511                         data->fan_min[i] = w83792d_read_value(client,
1512                                                 W83792D_REG_FAN_MIN[i]);
1513                         /* Update the PWM/DC Value and PWM/DC flag */
1514                         data->pwm[i] = w83792d_read_value(client,
1515                                                 W83792D_REG_PWM[i]);
1516                 }
1517
1518                 reg_tmp = w83792d_read_value(client, W83792D_REG_FAN_CFG);
1519                 data->pwmenable[0] = reg_tmp & 0x03;
1520                 data->pwmenable[1] = (reg_tmp>>2) & 0x03;
1521                 data->pwmenable[2] = (reg_tmp>>4) & 0x03;
1522
1523                 for (i = 0; i < 3; i++) {
1524                         data->temp1[i] = w83792d_read_value(client,
1525                                                         W83792D_REG_TEMP1[i]);
1526                 }
1527                 for (i = 0; i < 2; i++) {
1528                         for (j = 0; j < 6; j++) {
1529                                 data->temp_add[i][j] = w83792d_read_value(
1530                                         client, W83792D_REG_TEMP_ADD[i][j]);
1531                         }
1532                 }
1533
1534                 /* Update the Fan Divisor */
1535                 for (i = 0; i < 4; i++) {
1536                         reg_array_tmp[i] = w83792d_read_value(client,
1537                                                         W83792D_REG_FAN_DIV[i]);
1538                 }
1539                 data->fan_div[0] = reg_array_tmp[0] & 0x07;
1540                 data->fan_div[1] = (reg_array_tmp[0] >> 4) & 0x07;
1541                 data->fan_div[2] = reg_array_tmp[1] & 0x07;
1542                 data->fan_div[3] = (reg_array_tmp[1] >> 4) & 0x07;
1543                 data->fan_div[4] = reg_array_tmp[2] & 0x07;
1544                 data->fan_div[5] = (reg_array_tmp[2] >> 4) & 0x07;
1545                 data->fan_div[6] = reg_array_tmp[3] & 0x07;
1546
1547                 /* Update the realtime status */
1548                 data->alarms = w83792d_read_value(client, W83792D_REG_ALARM1) +
1549                         (w83792d_read_value(client, W83792D_REG_ALARM2) << 8) +
1550                         (w83792d_read_value(client, W83792D_REG_ALARM3) << 16);
1551
1552                 /* Update CaseOpen status and it's CLR_CHS. */
1553                 data->chassis = (w83792d_read_value(client,
1554                         W83792D_REG_CHASSIS) >> 5) & 0x01;
1555
1556                 /* Update Thermal Cruise/Smart Fan I target value */
1557                 for (i = 0; i < 3; i++) {
1558                         data->thermal_cruise[i] =
1559                                 w83792d_read_value(client,
1560                                 W83792D_REG_THERMAL[i]) & 0x7f;
1561                 }
1562
1563                 /* Update Smart Fan I/II tolerance */
1564                 reg_tmp = w83792d_read_value(client, W83792D_REG_TOLERANCE[0]);
1565                 data->tolerance[0] = reg_tmp & 0x0f;
1566                 data->tolerance[1] = (reg_tmp >> 4) & 0x0f;
1567                 data->tolerance[2] = w83792d_read_value(client,
1568                                         W83792D_REG_TOLERANCE[2]) & 0x0f;
1569
1570                 /* Update Smart Fan II temperature points */
1571                 for (i = 0; i < 3; i++) {
1572                         for (j = 0; j < 4; j++) {
1573                                 data->sf2_points[i][j]
1574                                   = w83792d_read_value(client,
1575                                         W83792D_REG_POINTS[i][j]) & 0x7f;
1576                         }
1577                 }
1578
1579                 /* Update Smart Fan II duty cycle levels */
1580                 for (i = 0; i < 3; i++) {
1581                         reg_tmp = w83792d_read_value(client,
1582                                                 W83792D_REG_LEVELS[i][0]);
1583                         data->sf2_levels[i][0] = reg_tmp & 0x0f;
1584                         data->sf2_levels[i][1] = (reg_tmp >> 4) & 0x0f;
1585                         reg_tmp = w83792d_read_value(client,
1586                                                 W83792D_REG_LEVELS[i][2]);
1587                         data->sf2_levels[i][2] = (reg_tmp >> 4) & 0x0f;
1588                         data->sf2_levels[i][3] = reg_tmp & 0x0f;
1589                 }
1590
1591                 data->last_updated = jiffies;
1592                 data->valid = true;
1593         }
1594
1595         mutex_unlock(&data->update_lock);
1596
1597 #ifdef DEBUG
1598         w83792d_print_debug(data, dev);
1599 #endif
1600
1601         return data;
1602 }
1603
1604 #ifdef DEBUG
1605 static void w83792d_print_debug(struct w83792d_data *data, struct device *dev)
1606 {
1607         int i = 0, j = 0;
1608         dev_dbg(dev, "==========The following is the debug message...========\n");
1609         dev_dbg(dev, "9 set of Voltages: =====>\n");
1610         for (i = 0; i < 9; i++) {
1611                 dev_dbg(dev, "vin[%d] is: 0x%x\n", i, data->in[i]);
1612                 dev_dbg(dev, "vin[%d] max is: 0x%x\n", i, data->in_max[i]);
1613                 dev_dbg(dev, "vin[%d] min is: 0x%x\n", i, data->in_min[i]);
1614         }
1615         dev_dbg(dev, "Low Bit1 is: 0x%x\n", data->low_bits & 0xff);
1616         dev_dbg(dev, "Low Bit2 is: 0x%x\n", data->low_bits >> 8);
1617         dev_dbg(dev, "7 set of Fan Counts and Duty Cycles: =====>\n");
1618         for (i = 0; i < 7; i++) {
1619                 dev_dbg(dev, "fan[%d] is: 0x%x\n", i, data->fan[i]);
1620                 dev_dbg(dev, "fan[%d] min is: 0x%x\n", i, data->fan_min[i]);
1621                 dev_dbg(dev, "pwm[%d]     is: 0x%x\n", i, data->pwm[i]);
1622         }
1623         dev_dbg(dev, "3 set of Temperatures: =====>\n");
1624         for (i = 0; i < 3; i++)
1625                 dev_dbg(dev, "temp1[%d] is: 0x%x\n", i, data->temp1[i]);
1626
1627         for (i = 0; i < 2; i++) {
1628                 for (j = 0; j < 6; j++) {
1629                         dev_dbg(dev, "temp_add[%d][%d] is: 0x%x\n", i, j,
1630                                                         data->temp_add[i][j]);
1631                 }
1632         }
1633
1634         for (i = 0; i < 7; i++)
1635                 dev_dbg(dev, "fan_div[%d] is: 0x%x\n", i, data->fan_div[i]);
1636
1637         dev_dbg(dev, "==========End of the debug message...================\n");
1638         dev_dbg(dev, "\n");
1639 }
1640 #endif
1641
1642 module_i2c_driver(w83792d_driver);
1643
1644 MODULE_AUTHOR("Shane Huang (Winbond)");
1645 MODULE_DESCRIPTION("W83792AD/D driver for linux-2.6");
1646 MODULE_LICENSE("GPL");